Kroma generates a complete presentation from a text description, a pasted URL or an uploaded document. The FAQ says it runs on GPT-4o with a system prompt tuned for presentation design, and the output comes with ten built-in themes, a block-based editor, a live presentation mode with keyboard navigation, and export to editable PowerPoint (.pptx), PDF or JSON.
The pitch is no friction: no account and no credit card, with the whole create, edit and export path free, and generation the site puts at around 90 seconds. Decks are held in the browser’s local storage and, according to the FAQ, are not stored on Kroma’s servers. That is a privacy point in its favour and also a fragility: clearing the browser or switching device loses the deck, so export a .pptx as soon as a draft is worth keeping. Generation relies on GPT-4o, so the submitted text does leave the browser; the FAQ’s not-stored statement concerns Kroma’s own servers.
The useful test is how much of the layout survives editing in PowerPoint, since first-draft decks from any generator need restructuring before a real audience sees them. The site quotes 2,400+ teams and 150,000+ decks and name-checks well-known software companies, but it names no company or founder, so those figures and logos are self-reported and unverified. A free service with no stated business model may change or disappear, which makes local exports the safe habit.
